论文标题
双重魔术的详细光谱$^{132} $ sn
Detailed spectroscopy of doubly magic $^{132}$Sn
论文作者
论文摘要
在Cern的Isolde设施中进行了调查,$β^ - 损失的$^{132} $ in In和$β^ - $β^ - $β^ - $β^ - $β^ - 延迟的中子排放$^$^ - delected Nepron nepration Nepration Nepration of $β^ - dermon nepration Nepration Nepration Nepration of $β^ - deled Nepration Nepration Nepration Nepration Nepration of $β^ - delect of $^ - 延迟的$^ - $^{132} $ sn的水平方案大大扩展,并在$β$衰减中首次观察到68 $γ$ - 过渡和17个水平。激发结构的信息由新的$γ$ - 过渡和$β$ -n衰减中的$^{133} $ in的状态完成。改进的延迟中子排放概率将获得$^{132} $ in和$^{133} $ in。级别的寿命是通过先进的延期$βγ$(t)快速定时方法来衡量的。基于实验发现和粒子孔构型的解释是由\ textIt {n} = 82和\ textit {z} = 50壳引起的核心孔构型,从而导致正质和负粒子孔孔多重。实验信息提供了新数据,以挑战$^{132} $ sn的理论描述。
The structure of the doubly magic $^{132}_{50}$Sn$_{82}$ has been investigated at the ISOLDE facility at CERN, populated both by the $β^-$decay of $^{132}$In and $β^-$-delayed neutron emission of $^{133}$In. The level scheme of $^{132}$Sn is greatly expanded with the addition of 68 $γ$-transitions and 17 levels observed for the first time in the $β$ decay. The information on the excited structure is completed by new $γ$-transitions and states populated in the $β$-n decay of $^{133}$In. Improved delayed neutron emission probabilities are obtained both for $^{132}$In and $^{133}$In. Level lifetimes are measured via the Advanced Time-Delayed $βγγ$(t) fast-timing method. An interpretation of the level structure is given based on the experimental findings and the particle-hole configurations arising from core excitations both from the \textit{N} = 82 and \textit{Z} = 50 shells, leading to positive and negative parity particle-hole multiplets. The experimental information provides new data to challenge the theoretical description of $^{132}$Sn.